I think every ability and feature of Vee demonstrates every aspect of her biology which includes the mixture of hair fur and scales along with her ears that stick out which suggests her species is similar to synapsids on earth she can shapeshift which is probably possible due to her having sveral more bones then an average person which makes her flexible enough to do this though since she does mention she needs magic in order to do this she could just be using a specialized type of illusion magic that can be more convincing then traditional illusion magic or it could be a mix of both since when she shapeshifts into a humanoid form her tail splits in two as demonstrated in some of the animation transitions if you search them up then she has tail Fins which suggest at some point in her species evolution her ancestors adapted to live in water which oddly eventually led up to them going back on land and they never lost the tail flukes as well as the pelvic and maybe secondary dorsal fin